Welding and tempering compound.



UNITED STATES PATENT OFFICE.

MELVIN c. DEAN, oF NILEs, OHIO.

WELDING AND TEMPERING COMPOUND.

$PECIFIGATION forming part of Letters Patent No. 659,055, dated October2, 1900.

Application filed April 20, 1900. Serial No. 13,564. (No specimens.)

To all whom it may concern.-

Be it known that I, MELVIN O. DEAN, of Niles, in the county of Trumbulland State of Ohio, have invented certain new and useful Improvements inWelding and Tempering Compounds; and I do hereby declare the followingto be a full, clear, and exact description of the invention, such aswill enable others skilled in the art to which it appertains to make anduse the same.

This invention has reference toa compound for welding and tempering ironand steel.

The object of the invention is to-provide a simple and inexpensivecompound the proper use and application of which will expedite andfacilitate all tempering and welding operations and will enable burntsteel to be utilized for manufacturing purposes and iron to be weldedwithout being alfected by the su lfurin coal or coke, whereby an evensmooth weld will be obtained. The compound will improve the quality ofall or nearly all steel on which it is used. It will restoreimpoverished steel to its former nature.

My compound is composed of pulverized borax, one pound; black oxid ofmanganese, four ounces, and carbonate of iron, one ounce, all thoroughlymixed together. While, of course, I am not to be restricted to theseproportions, yet use and experiments have demonstrated that theirobservance is important to the accomplishment of successful results.

In welding the welds are first prepared. The compound is then applied tothe parts to be welded, after which the second heat is made, and in thisheat the compound is absorbed by the steel. For tempering a darkcherryred heat is first obtained, and then the compound is applied,which penetrates or is absorbed bythe steel, which is then forged. Ihave found that burnt steel may be restored by being thus Worked with mycompound and, it being then better than even before it was burnt, may beutilized for manufacturing purposes-such, for instance, as machiniststools. It has also been demonstrated that springs may be welded asreadily as ordinary iron, with the result that the welded point isbetter and stronger than before. Without this compound the springs to beWelded must be firmly fastened together. In welding iron the compoundacts as a protection against the sulfur in coal or coke and enables meto obtain a perfect weld.

While I am aware that some of the ingredients of my com pound haveheretofore been used in connection with other mixtures, yet I am notaware of the previous existence of any compound for welding andtempering iron and steel and restoring the useful properties in burntsteel wherein black oxid of manganese is used conjunctively with boraxand carbonate of iron in substantially the proportions herein stated. Ifind that by the use of the black oxid of manganese the otheringredients are caused to at once enter into the iron, while the entiremixture is such that, as hereinbefore stated, the tempering of steel isgreatly facilitated, as is also the welding of both steel and iron.

I claim as my invention The compound herein described for tempering andwelding iron and steel, consisting of pulverized borax, black oxid ofmanganese and carbonate of iron, as set forth.

In testimony whereof I have signed this specification in the presence oftwo subscribing witnesses.

MELVIN O. DEAN. Witnesses:

EDNA H. Pnw, W. H. SMILEY.

